Nortel Passport 15000, Установка и обслуживание оборудования, Страница: 619 / 874

Chapter 17 Hardware procedures 619
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
Installing high-density cable management brackets
Install high-density cable management brackets to double the capacity of
cables on a NEBS 2000 frame.
Prerequisites
• You must be familiar with “Safety considerations and best practices”
(page 53).
• You need these parts:
— 34 plastic brackets (part number P0937935)
— 2 thread-forming 10-mm (3/8-in.) hex-head screws per bracket
• See 241-1501-205 Passport 15000, 20000 Site Requirements and
Preparation Guide to determine whether your cabling requirements are
high-density.
• The NEBS 2000 frame arrives with standard cable management brackets
already screwed to the uprights at the front and rear sides of the frame.
When the types and quantities of FPs in a shelf require high-density
cabling, the standard cable management brackets must be doubled or
changed as follows.
— To accommodate high-density fiber optical FP cables, use pairs of
the plastic cable management brackets (P0937935) as described in
this procedure.
— To accommodate high-density coax FP cables, use pairs of the
plastic cable management brackets (P0937935), or for very high
density, follow the procedure “Installing extended cable
management brackets” (page 601).
Procedure steps
1 Remove the pre-installed cable management brackets on the frame
uprights at the front of the shelf by unfastening the 10-mm (3/8-in.)
screws.
If the left or right frame upright has unused holes in the silvery strip, note
where the cable management brackets were installed so that you ensure
re-using their screw holes.
2 Add another bracket to the removed one to make a pair as shown in the
figure “Aligned pair of plastic cable management brackets” (page 620).